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11.
Thebearingcapacityoffoundationsmeanstheulti mateloadsthatcanbeappliedonthefoundations.Inconventionaltheoriesofgeotechnicalengineering ,manybearingcapacityequationshavebeenprovidedtopredicttheultimatebearingcapacityoffoundations.Butmostoftheequationsrefertothefoundationsonhomogeneoussoilsandcannotbeusedforinhomogeneoussoils.Inpractice,foundationsoftenconsistoflayeredsoils,espe ciallyinharborengineering .Sometimesthestrengthpa rametersofsoilsarequitedifferentfromeachother .Therefore,themechanis… 相似文献
12.
研究大型室内粘性土柔性板桩模型试验从设计、准备、试验到数据采集的全过程 ,对试验数据进行了分析 .考虑到土体中裂纹的存在将会对板桩的受力和变形产生影响 ,引进了断裂力学的基本思想并推导了土体开裂后的本构关系 ,开发出弹塑性有限元程序对模型试验进行模拟分析 ,得到了比较满意的效果 相似文献
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A nonmetal transportation port with soft soil foundation of Tianjin New Harbor failed during construction in 1997. The soil properties and geological changes before and after landslide were investigated by in situ test means. The stability of the slope was estimated with several calculation methods, such as the simplified Bishop method and the non-circle analysis method. According to the investigation and analysis results, the factors that may cause the slope failure can be determined as follows： excessive excavating, violating the normal construction procedure, excessive pore water pressure during earlier piling and sudden water-level fluctuation in front of the slope. Measures to improve the soil foundation for reconstructing the port include strengthening the failed slope with vibro sand piles, filling up the crushed stone layer, dividing the excavation into four steps and driving piles by larger intervals. The port now has been successfully reconstructed and begun operation. 相似文献